An Introduction to Energy. Why do we care?. 1. Fossil fuels are finite. a fuel (as coal, oil, or natural gas) formed in the earth from plant or animal remains. 2. Demand constantly increases. 3. Security -can we provide our own energy?.
a fuel (as coal, oil, or natural gas) formed in the earth from plant or animal remains
UPDATE: EIA Sees U.S. Crude-Oil Output Topping Net Imports in October
* China excludes Hong Kong
Per Capita Consumption of Commercial Energy (tons of oil equivalent)
Transportation (fossil fuels) 28%
Size and Weight
- Around the world, we are taking more trips and traveling greater distances
The world’s fastest growing form of energy use, largely due to the rise of the private car
CAFE stands for corporate average fuel economy
Average mpg of a company\'s fleet
Oil consumption increases 7.5% a year (7x US)
90x more cars today than in 1990
More cars than US by 2030
Household (electricity) 22%
Agriculture (fossil fuels)
What type of energy is used in each sector?
How would the type of energy used impact the possible solutions?
an electrical current is generated in a conductor moving in a magnetic field.
The effect is greatly magnified if the conductor is replaced with a coil or coils of copper wire. If these coils are mounted on a rotating shaft or armature, continuous rotation will produce a continuous alternating electrical current. This is how nearly all electricity is generated today.
A unit of energy commonly used on fuel bills.
One kWh would power a device that consumes a kilowatt of power for an hour, or a 100 watt lightbulb for 10 hours, etc.
Power distribution network
Connects power generation plant to the plug in your house
Generate your own power
No connection to grid
Generate some power
When not using, power returns to grid
Power company pays you for this power
Power available at all times
Baseload power plants run constantly and generate the minimum constant demand
Some alternatives not appropriate for baseload
Unlike fossil fuels, which are exhaustible, renewable energy sources regenerate and can be sustained indefinitely. The five renewable sources used most often are biomass, water (hydropower), geothermal, wind, and solar.
Conservation (lose less)
Efficiency (use less)
Switch to new sources